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Cell viability. (A) Cell viability for several oral cancer cell lines and normal oral (HGF-1) cell lines in EANT treatments for 24 h MTS assay. (B) NAC (2 mM) pretreatment outcome of EANT treatments (0 and 25 μg/mL) for 24 h MTS assay. The cell viability of untreated controls for each oral cancer cell line was adjusted to 100%, which is not shown here. Data (means ± SD, n = 3) showing * differ in significance for paired comparisons (p < 0.05).
